On Mon, Aug 31, 2015 at 05:09:28PM +0200, Emmanuel Florac wrote: > Le Mon, 31 Aug 2015 16:49:49 +0200 > Vojtech Pavlik <vojtech@xxxxxxx> écrivait: > > > > > > > The bcache_writeback stays at 100% _even_ when in writethrough mode, > > > alas. So this looks normal. However dirty_data definitely should > > > drop to zero... > > > > This most certainly isn't normal. The ftrace shows it's looping in a > > loop doing nothing useful. > > > > Yep, I've had a quick look at the code, however it's not very > inspiring. It very much looks like there's a missing test. From your > trace it looks like it finds a key_bad (?) -- from the struct > bch_extent_keys_ops in bcache/extents.c -- but there is no code anywhere > to manage this case apparently. > > Ah, and I can't download your complete trace, too : twilight.ucw.cz > isn't responding. :) Sadly, the bcache array crashed hard earlier today (with a bug in and the machine doesn't boot anymore. I'm recovering it now. -- Vojtech Pavlik Director SuSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
